I don't think traffic light outages (e.g. flashing yellow) or police directing traffic at intersections is that rare, but regardless these cars do need to handle it in a safe and legal manner, which either means recognizing police gestures in a reliable way, or phoning home.

We know that Waymos phone home when needed, but not sure how Tesla handles these situations. I'm not sure how you conclude anything about Tesla based on their current temporary "safety monitor" humans in the cars - this is just a temporary measure until they get approval to go autonomous.